Explosive-engine.



PATENTED APR. 30, 1907.

0. SCHULTZ.

EXPLOSIVE ENGINE.

APPLICATION FILED JAN. 3, 1905.

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PATENTED APR. 30, 1907.

C. SCHULTZ.

EXPLOSIVE ENGINE.

APPLICATION FILED JAN. 3, 1905.

2 SHEETS-SHEET 2.

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EXPLOSLVE-ENGlNE- Specification of Letters Patent.

Patented April 80, 1907.

Application filed January 3.1905. serial-mascara and refers ,particularly to means for altering the effective force of the explosion.

The invention also refers to the various improvements in detail hereinafter described. an the present embodiment of the invention, the object first-mentioned is attained same position as in Fig. 3.

by opening the exhaust port in the explosion chamber at different points in the stroke of the piston. This result is accomplished by forming notches in a valve ring attachedto the piston, of different depths with res act to the movement of the piston, and ma 'ng said valve ring rotatable to bring any one of said notches into alinement with the ex.- haust ort.

In t e accompanying drawings, Figure 1 is a vertical central section taken through an explosive engine embodying the features of my invention.

Fig. 2 is a horizontal sectional view taken on dotted lines 2 2 of Fig. 1. Fig. 3 is asimilar view showin g one of the exhaust notches in the valve ring registering with the exhaust port. Fig. 4 is a transverse sectional view through the sleeve for receiving the rod for. turning the valve ring, also through said rod. Fig. 5 is a transverse sectional view through the cylinder and piston, showing the exhaust notches in the valve ring and the exhaust port in the cylinder. In this view the valve ring is in the Fig. 6 is a transverse section through the piston and its oscillatory connection withthe crank rod, taken on dotted line 6 6 of 1. This connection permits the oscillatory movement of the piston within the cylinder. Fig. 7 is a side elevation of said connection.

I have herein shown this invention as ap-' plied to a two-cycle gasolene engine, and reof the engine, within which base is formed a chamber 2 for receiving the hydrocarbon gas. The cylinder 3 of the engine is formed integral with the base, and is provided with a water-jacket 4. Hydrocarbon gas is introduced into the receiving chamber 2 through the pipe 5 having a check valve 6 to prevent a receding movement of the gas therein, and

within the walls of the cylinder.

is conducted from said chamber to the cylinder by means of the pipe 7 or a port cored Upon its opposite side the cylinder 3 is provided'with an exhaust port 8, this instance placed somewhat nearer the upper end of thecylinder than is usual in engines of this character. a

The upper end of the cylinder is closed by means of the cylinder head 9, which head is provided with a circular central opening 10, for receiving the tubular sleeve 11. "A rod 12 square or of any other non-cylindrical form slides longitudinally within the central opening of said sleeve, being fitted closely within said opening. The lower end of the sleeve 11 has an outwardly extending annular flange 13 adapted to contact the inwardly extending ring'14 upon the head 9 and to fit tightly thereupon, as by means of a ground joint between said ring and said flange. At

its u per end the joint between the rod 12 and the s eeve 11 is closed by means of stuffing box 15 of usual construction. The sleeve 11 and the rod 12 are rotatablewithin the cylinder 9 by means of a hand lever 16 fixed upon said sleeve. f

A crank 17 and crank shaft 18 are suitably supported in bearings-(not shown) in the base 1, the crank shaft extending through and the crank being wholly within the receivin chamber 2. A crank rod.19 has the usua connection with said ,crank' 17 at the lower end of said rod, and'at its upper end has a connection to permit the turning of the piston 20 with relation to the crank rod to be next described. The body portion of the piston 20 is tubular, and is provided with the usual At'its upper end the piston 20 has an iritegral upwardly extending annular valve ring 27 through which are cut a plurality of notches of diflerent depths with relation to the longitudinal movement of the piston,

which notches, by turning the piston, are

adapted to be placed in vertical alinement with the exhaust port 8. In this instance I have shown two notches 28 and 29 in said valve ring. In case it should be desirable not to rotate the piston, it is clear that the valve ring 27 might be made separate from,

but attached to the piston and arranged to' be rotated with relation thereto. The lower end of the rod 12 is secured rigidly to the piston in any suitable manner, as by means of the cars 30 fixed upon said rod and the screws 31 passing through said'ears and into the piston. Suitable means (not shown) may be provided for holding the piston or .valve ring in any predetermined position.

32 refers to anigniter of any suitable construction adapted periodically to ignite the charge.

Access to the receiving chamber 2 is had by means of openings 33 and 34 through the opposite side walls of the base 1, and said openings in practice are closed by means of heads 35 and 36.

In operation, when it is desired to utilize the full efficiency of the explosive charge the valve ring 27 is turned so that neither of the notches 28 and 29 is'in coincidence with the exhaust port 8 asthe piston is reciprocated. v When-the valve ring isin this position said downward movement of port is notuncovered until the piston approaches the lowest point in its stroke, when the upper edge of the ring 27 falls belowthe exhaust port, uncovering said port and permittingth'eescape of the deadgases; Upon its upward movement the piston draws into the receiving chamber 2, through'the pipe 5, a quantity of hydrocarbon gas.

the piston the gas, being prevented'from escaping from the receivingchamber 2 by reason of the checkvalve '6, is displaced and forced upward through the pipe 7 into the cylinder. Upon the upward movement of the piston the charge drawn into the cylinder is, com pressed, and When the piston starts on its downward movement said charge is exploded by the igniting mechanism 36. The piston is driven downward by the force, of the explosion, pressurebeing exerted upon its upper side by the expanding gases until the exhaust port .8 is uncovered, when the gases within the cylinder are exhausted through said port.

. is rotated into the normal position, as shown .in Fig. 1

VVhen'an earlier exhaust with less Upon the power is desired, the valve ring is rotated to bring either one of the notches 28 and 29 into piston when said piston has traveled through about two-thirds of its reciprocatory movement, and when the notch 29 is in coincidence With the exhaust port said port is uncovered and the pressure of the exploded charge upon the piston is exhausted when the piston has traveled about one-half of its stroke My invention is not restricted to the precise construction and arrangement-of parts herein shown and described, as such con struction and arrangement may be changed by'those skilled in the art without departing from the spirit and scope of the invention.

I claim as my invention:

1. In. an explosive engine, in combination, a c linder having a port therein; a piston; and means moving with said piston for opening said port at various of said piston.

.2. In an explosive engine, in combination, a cylinder having a port therein; a piston for said cylinder; means traveling with said pispoints in-the stroke ton for covering and uncovering said port;

and means adapt-ed to be actuated by the operator for varying the time of uncovering said portwith reference to the position of the piston.

3. In an explosive engme, in combinat on, I

a cylinder having a-porttherein; a piston in said cylinder; a valve member on said piston adapted to open and close said port; and means for adjusting the position of said valve member with relation tosaid port, independently of the movement of said valve member due to said piston, for openingsaid port at various points'inthe stroke of the pis- =ton.

4. In an explosive engine, in combination, .a cylinder having aport therein; a piston in said cylinder; a valve member on said piston adapted 'to 0 en and close said port; and a rod 'connecte with said valve member and extending to a point outside the cylinder and arranged to be 'movedfby the operator for 'moving said valve member.

5. In-an explosive engine, in combination,

'a cylinder having aport therein a piston in said cylinder, said piston beingprovided with means for opening and closing said port and means for ad ustably rotating sald plston to vary the time of opening said port.

6. In all-explosive engine, in combination, a'cylmdcr having a port therein; a piston in said cylinder, said piston being provided to said port; an said valve member with relation to said port,

with means for opening and closing said port a crank shaft; aco'nnction between said piston and said crank shaft permitting of a rotation of said piston; and means for rotating said piston through variable distances to open and close said port at various points in the stroke of said piston.

7. In an explosive engine, in combination,

a cylinder having a port therein; a piston'in.

said cylinder; a valve member moving with said piston, said valve member being cut away at two different points with reference to the stroke of the piston; and means for adjusting said valve member to bring either of said cut-away'points in position to register with said port.

8. In an explosive engine, in combination, a cylinder having an exhaust ort therein; a piston in said cylinder; a va ve ring fixed with relation to one end of said piston, saidring being notched at two different points with reference to the stroke of the piston; and means for rotating said piston to bring either of said notches in position to register with said exhaust port 9. In an explosive engine, in combination, a cylinder having a port therein and an open ing extending through one of its endsa piston in said cylinder; a valve member fixed with relation to said iston, said member being cut away at two iflerent points with reference to the stroke oi' the piston; a rod fixed to said valve member and extending through the opening in the end of said cylinder toa point outside of said cylinder; and means for rotating said rod,

10. In an ex ilosive engine, in combinatioh, a cylinder having a port therein and an opening extending through one of its ends; a piston in said cylinder; a valve member fixed iston f or opening and closing said 8 means for adjusting the position of said means comprising a rod of angular crosssection fixed to said member, a sleeve adapted to receive said r d and to lie in said opening in the end'of said cylinder, and means for rotating said sleeve.

11. In an explosive engine, in combina tion, a cylinder having a port therein; a piston; and. means in said piston controllable from without the cylinder, for opening said pdrt at various points in the stroke of said piston.

12. In an explosive engine, in combina tion, a cylinder having a port therein; a pis ten for said cylinder; means traveling with said piston for covering and uncovering said port; and means adapted to be actuated'by the operator from without said cylinder, for varying the time of uncovering said port with reference to the position cfthe piston.

13; In an explosive engine, in combination, a cylinder having a port therein; a piston in. said cylinder, said piston being provided with means for opening and closing said port means for ad justably rotating said piston to vary the time of opening said port, said means being operable from without said cylinder.

14. In an ex losive engine, in combination, a cylinder iaving a port therein; a pistonin said cylinder, said piston being provided with means for opening and closing said port; a crank shaft; a connection. between saidpiston and said crank shaft .permitting of rotation of said piston; and manipulative means for rotating said piston through variable distances to open and close said port at various points in the stroke of said piston, said means being operable from without said cylinder. A w

CHARLES SCHULTZ.

Witnesses L. L. MILLER, GEORGE Li OHINDAHL. 

